Return to flight and then be lost in accidents.
Which will be greatly reduced if pilots stop flying aerobatics in them, and airshow audiences say that they want to see the warbird, but don't want to see it risked doing needless aerobatics. If you want to fly aerobatics, use a modern (replaceable) aerobatic aeroplane.
Hopefully something can be rescued and returned to flight.
If it were bellied in (such as a gear failure), probably. If, as in this case, it is dived in from inverted, and fatal, little if anything will be reusable - just a waste, which makes pilots look dangerous. I stopped going to airshows years ago, watching one fatal crash in front of me was enough.